/**百度转84*/
const bd09Togps84 = (lng, lat) => {
  var gcj02 = bd09Togcj02(lng, lat);
  var map84 = gcj02Togps84(gcj02.lng, gcj02.lat);
  return map84;
};
/**84转百度*/
const gps84Tobd09 = (lng, lat) => {
  var gcj02 = gps84Togcj02(lng, lat);
  var bd09 = gcj02Tobd09(gcj02.lng, gcj02.lat);
  return bd09;
};
/**84转火星*/
const gps84Togcj02 = (lng, lat) => {
  var dLat = transformLat(lng - 105.0, lat - 35.0);
  var dLng = transformLng(lng - 105.0, lat - 35.0);
  var radLat = (lat / 180.0) * pi;
  var magic = Math.sin(radLat);
  magic = 1 - ee * magic * magic;
  var sqrtMagic = Math.sqrt(magic);
  dLat = (dLat * 180.0) / (((a * (1 - ee)) / (magic * sqrtMagic)) * pi);
  dLng = (dLng * 180.0) / ((a / sqrtMagic) * Math.cos(radLat) * pi);
  var mgLat = lat + dLat;
  var mgLng = lng + dLng;
  var newCoord = {
    lng: mgLng,
    lat: mgLat,
  };
  return newCoord;
};
/**火星转84*/
const gcj02Togps84 = (lng, lat) => {
  var coord = transform(lng, lat);
  var lontitude = lng * 2 - coord.lng;
  var latitude = lat * 2 - coord.lat;
  var newCoord = {
    lng: lontitude,
    lat: latitude,
  };
  return newCoord;
};
/**火星转百度*/
const gcj02Tobd09 = (x, y) => {
  var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
  var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);
  var bd_lng = z * Math.cos(theta) + 0.0065;
  var bd_lat = z * Math.sin(theta) + 0.006;
  var newCoord = {
    lng: bd_lng,
    lat: bd_lat,
  };
  return newCoord;
};
/**百度转火星*/
const bd09Togcj02 = (bd_lng, bd_lat) => {
  var x = bd_lng - 0.0065;
  var y = bd_lat - 0.006;
  var z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi);
  var theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi);
  var gg_lng = z * Math.cos(theta);
  var gg_lat = z * Math.sin(theta);
  var newCoord = {
    lng: gg_lng,
    lat: gg_lat,
  };
  return newCoord;
};

var pi = 3.1415926535897932384626;
var a = 6378245.0;
var ee = 0.00669342162296594323;
var x_pi = (pi * 3000.0) / 180.0;
var R = 6378137;

const transform = (lng, lat) => {
  var dLat = transformLat(lng - 105.0, lat - 35.0);
  var dLng = transformLng(lng - 105.0, lat - 35.0);
  var radLat = (lat / 180.0) * pi;
  var magic = Math.sin(radLat);
  magic = 1 - ee * magic * magic;
  var sqrtMagic = Math.sqrt(magic);
  dLat = (dLat * 180.0) / (((a * (1 - ee)) / (magic * sqrtMagic)) * pi);
  dLng = (dLng * 180.0) / ((a / sqrtMagic) * Math.cos(radLat) * pi);
  var mgLat = lat + dLat;
  var mgLng = lng + dLng;
  var newCoord = {
    lng: mgLng,
    lat: mgLat,
  };
  return newCoord;
}

const transformLat = (x, y) => {
  var ret =
    -100.0 +
    2.0 * x +
    3.0 * y +
    0.2 * y * y +
    0.1 * x * y +
    0.2 * Math.sqrt(Math.abs(x));
  ret +=
    ((20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0) /
    3.0;
  ret +=
    ((20.0 * Math.sin(y * pi) + 40.0 * Math.sin((y / 3.0) * pi)) * 2.0) / 3.0;
  ret +=
    ((160.0 * Math.sin((y / 12.0) * pi) + 320 * Math.sin((y * pi) / 30.0)) *
      2.0) /
    3.0;
  return ret;
}

const transformLng = (x, y) => {
  var ret =
    300.0 +
    x +
    2.0 * y +
    0.1 * x * x +
    0.1 * x * y +
    0.1 * Math.sqrt(Math.abs(x));
  ret +=
    ((20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0) /
    3.0;
  ret +=
    ((20.0 * Math.sin(x * pi) + 40.0 * Math.sin((x / 3.0) * pi)) * 2.0) / 3.0;
  ret +=
    ((150.0 * Math.sin((x / 12.0) * pi) + 300.0 * Math.sin((x / 30.0) * pi)) *
      2.0) /
    3.0;
  return ret;
}
const InternetMapCorrection = {
  bd09Togps84,
  gps84Tobd09,
  gps84Togcj02,
  gcj02Togps84,
  gcj02Tobd09,
  bd09Togcj02
}
export default InternetMapCorrection